An additive to increase delayedcoker yield has been prepared based on the mechanism of enhancing light oil yield and reducing the yields of coke and dry gas.
It has become a normal practice to estimate coker drum's service life by the extent of spheroidization of 20g steel in delayedcoker operating at high temperatures.
Considering the high contents of olefins and nitrogen, the whole fraction of delayedcoker distillates (including light and heavy naphtha, gas oil) must be hydrotreated.